'Sarai, Abram's wife, took' means the affection for truth, which in the genuine sense is 'Sarai the wife'. 'Hagar her Egyptian servant-girl' means the life of the exterior man and the affection for knowledge. 'After Abram had been dwelling ten years in the land of Canaan' means the remnants of good and of truth deriving from that good which the Lord acquired to Himself and by means of which this rational was conceived. 'And she gave her to Abram her husband as his wife' means a joining together prompted by the affection for truth.